Note I - Income Taxes - Significant Portions of the Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred compensation and retirement plan	$ 10,246	$ 13,135
Accrued expenses not deductible until paid	33	181
Lease liability	5,591	5,873
Employee stock-based compensation	491	385
Accrued payroll not deductible until paid	103	96
Accounts receivable, net	43	59
Investment in foreign subsidiaries, outside basis difference	1,047	1,019
Goodwill	445	473
Interest Expense limitations	913	1,267
Other, net	585	452
Foreign net operating loss carryforwards	1,623	1,631
State net operating loss carryforwards	5,184	3,475
Foreign tax credit carryforwards	4,212	3,841
General Business Credit Carryovers	546	215
Total gross deferred tax assets	31,062	32,102
Less valuation allowances	(7,652)	(25,894)
Net deferred tax assets	23,410	6,208
Property, plant and equipment	(2,024)	(897)
Right-of-use asset	(4,765)	(5,006)
Prepaid Expenses	(228)	(305)
Other, net	(87)	0
Total gross deferred tax liabilities	(7,104)	(6,208)
Net deferred tax assets (liabilities)	$ 16,306	$ 0